Pneumatic stripping mechanism for carding-cylinders.



A. ROUGE. PNEUMATIC STRIPPING MECHANISM FOR GARDING CYLINDERS.

. APPLICATION FILED MAY 25, 1912. Y 1,086,222, Patented Feb. 3, 1914.

2 Wzizzeed:

AUGUSTE ROUGE, OF ST.-ETIENNE -LES-REMIREMONT, FRANCE.

PNEUMATIC STRIPPING MECHANISM FOR CARDING-CYLINDERS.

Specification of Letters Patent.

Patented Feb. 3,1914.

Application filed May 25, 1912. Serial No. 699,748.

To all whom it may concern:

Be it known that I, AUoUsrn ROUGE, a citizen of the French Republic, and resident of St. Etienne les Remiremont, Vosges, France, have invented certain new and useful Improvements in Pneumatic Strip-ping Mechanism for carding-Cylinders, of which the following is a specification.

' Processes for automatically dusting and removing the bits of wool from the drums of the carding machines are known, and they consist in blowing compressed air from behind toward the needles to be cleaned said air being then sucked by any suitable means. In such processes the work is always done by degrees and successively on small portions of the drum, and a considerable time is nec essary for cleaning the whole.

The improved process andapparatus are superior to the foregoing ones in that the entire drum is cleaned in the same time which was necessary for cleaning a small portion of said drum.

The accompanying drawing shows a constructive form of the apparatus for performing the above work.

Figure 1 is a vertical section of the device. Fig. 2 is a partially sectional top View. 7

Fig. 3 is a detail.

The device surrounds over its entlre length and laterally a portion of the drum to be cleaned.

1 is a chamber connected by means of a valve with a compressed air duct, the pressure of the air being about 5 kilograms with the object of removing the dust by the air jet flowing from the rear over the needles of a drum 3; the dust is forwarded into a chamber 4. The chamber 4 is closed all around and forms a cap or funnel from which a current of sucking air forwards the cloud of dust to the outer air where the dust is collected.

The chamber 1 is made of cast iron and wrought iron and comprises two portions-5 and 6 which are tightly riveted together at 7. The contact at the free joint 8 is produced by means of several bolts 9 provided on the whole length of said chamber 1. The rear cont-act joint between 5 and 6 is smooth while the contact surface of 5, at the front part, is channeled in such a manner that, when compressed air is admitted to the chamber 1, said air will flow through the small openings 10 (Fig. 3) if it does not meet with impediments.

In order to keep the air under pressure in the chamber 1 and to cause said air to act only at a determinated pressure of more or less 5 kg. a closure member 11 provided with a strip of canvas or rubber 12 is longitudinally placed near to the front of the joint 8 in order to obturate the small openings 10. Said rule is riveted to plate springs 13 which press said rule against the joint 8; said springs are maintained by means of bolts 9 and owing to the pressure of said springs, the joint 8 is made tight. The closure member 11 may be kept apart from the joint of the portions 5 and 6 by means of a rod 14 which slightly raises the springs 13 13 in the following manner: Laterally with respect to the chamber 1 and'at the opposite side of the air inlet is provided a cylinder 15 opening into said chamber and the perforated bottom of which communicates with the outer air. Tightly engaged within said cylinder moves a piston 16 the rod of'which is provided with a spring, upon which presses the compressed air; the extended piston rod acts upon a lever 19 which is hingedly connected with the rod 14. If the pressure in the chamber 1 is adequate, the rod 14 moves toward 20 and said motion allows the springs 13 to rise and so moves the closure member away from the small openings 10. As soon as the air pressure within the chamber 1 drops, the rod 14 moves toward 21 and the closure member 11 completes the joint.

In order to ascertain from the outside the instant when the work begins, a disk 22 is provided, which swings according to the position of the end of the piston rod 18. If desired an alarm bell may be caused to ring during the whole working time; in this case the displacement of the piston rod may produce the contact which causes the bell to ring.

Having now fully described my said invention, what I claim and desire to secure by Letters Patent, is:

1. An apparatus for performing the automatic dusting and removing of adhering wool bits from the whole length of the drum of a carding machine, comprising a drum on said machine, carding needles provided on said drums, a compressed air chamber surrounding the whole length and a part of the lateral portion of said drum, a plurality of openings provided on that edge of said chamber which is directed toward the back of said needles, said openings forming outlets for the compressed air, a closure disposed in front of said openings, springs pressing against said closure for applying said closure against said openings when the air pressure in said chamber drops, and means for removing said closure from said openings when the air pressure becomes suitable.

2. In combination, a drum having teeth, an air chamber adjacent the drum, said chamber having openings, a closure for'controlling said openings, a piston for operating the closure, said piston being controlled in its movement in one direction by the air in the chamber, automatic means for operating the piston in the opposite direction, and

an exhaust chamber with which the openings communicate.

3. In combination, a drum having teeth, an air chamber adjacent the drum, said chamber having openings, a closure springs normally holding the closure in position to close the openings, a slide with a plurality of inclined steps to engage with the springs to operate the closure, a cylinder communicating with the air chamber, a piston in the cylinder operated in one direction by the air fromthe chamber, a spring: for moving the piston in the opposite direction, and

a dust chamber with which the openings in the air chamber communicate.

4. In combination, a drum having teeth, an air chamber having an outlet adjacent the teeth, means for supplying the air chamber with compressed air, a closure for controlling the outlet in the air chamber, means for normally holding the closure in closed position, means constructed to operate when the air in the air chamber reaches a determinate pressure for moving the closure to allow the air in the air chamber to escape through the outlet, and an exhaust chamber with which the outlet communicate-s.

5. In combination, a drum having teeth, a chamber located adjacent the teeth and formed with an outlet opening to direct a blast of air toward the teeth, a. valve for regulating the openings, pneumatic means for operating the valve in one direction, and means for operating the valve in the opposite direction.

In testimony whereof I have hereunto set my hand inpresence of two Witnesses.

AUGUSTE ROUGE.

Vitnesses A. GUYARD, TH. TAURAINE.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents. Washington, D. G. 

